Danbury Director of Health Lisa Morrissey confirms the department is investigating several food poisoning complaints and that some reported that they ate at Black Angus. They received the first complaint Wednesday.

At this stage of the investigation, it is not clear if the restaurant is linked to any illness and the health department has not ruled out other causes.

The restaurant plans on reopening Friday at 11 a.m., according to a sign on the front door.

Morrissey said the restaurant's previous reviews were excellent. Black Angus was last inspected by the Danbury Health Department on Aug. 15 and passed with a score of a 91, according to city health department records.

Restaurant management issued the following statement to NBC Connecticut:

"The Barbarie name has been a part of Danbury for over 60 years. Our main priority is the safety and health of our patrons. We are currently working alongside the health department to get to the bottom of this. At this time, we do not have any further information."